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2026-06-27 - 11:52
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack6slot0.osadl.org (updated Sat Jun 27, 2026 01:01:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
508099213207,4cyclictest0-21swapper/2822:42:4421
508099213207,4cyclictest0-21swapper/2822:42:4421
505399206176,27cyclictest3076-21kworker/u81:3+events_unbound00:06:4334
505399206176,27cyclictest3076-21kworker/u81:3+events_unbound00:06:4334
506199193174,18cyclictest0-21swapper/1100:29:243
506199193174,18cyclictest0-21swapper/1100:29:233
509199191184,3cyclictest0-21swapper/3819:30:1732
509199191184,3cyclictest0-21swapper/3819:30:1732
506299191149,40cyclictest1358-21ModemManager22:21:134
506299191149,40cyclictest1358-21ModemManager22:21:134
506299191149,40cyclictest1358-21ModemManager22:21:134
507499189187,1cyclictest0-21swapper/2200:30:5315
507499189187,1cyclictest0-21swapper/2200:30:5315
5062991871,87cyclictest0-21swapper/1221:11:214
5062991871,87cyclictest0-21swapper/1221:11:214
505799186173,11cyclictest0-21swapper/820:15:1438
505799186173,11cyclictest0-21swapper/820:15:1438
508999184159,22cyclictest0-21swapper/3622:44:5630
508999184159,22cyclictest0-21swapper/3622:44:5630
506299184140,38cyclictest0-21swapper/1221:40:434
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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